glIsRenderbuffer — determine if a name corresponds to a renderbuffer object
GLboolean glIsRenderbuffer( | GLuint renderbuffer); |
glIsRenderbuffer returns GL_TRUE if renderbuffer is currently the name of a renderbuffer object. If renderbuffer is zero, or if renderbuffer is not the name of a renderbuffer object, or if an error occurs, glIsRenderbuffer returns GL_FALSE. If renderbuffer is a name returned by glGenRenderbuffers, by that has not yet been bound through a call to glBindRenderbuffer or glFramebufferRenderbuffer, then the name is not a renderbuffer object and glIsRenderbuffer returns GL_FALSE.
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